题目内容

The article gives students some about how to stay safe online.

A.advise B.suggestions C.advantages D.activities

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What is the most stressful thing in school? It is probably exams. Exams can put us under a lot of pressure. But some students do better under pressure. while others do not. So, why do some students perform better under stress?

It all comes down to dopamine(多巴胺). Dopamine is a chemical in our body that sends signals(信号) in the brain. It has many important roles: affecting memory, attention and how we learn. Our brains work best when there is a balance of dopamine--not too much or too little.

Our brains control dopamine in two ways. It either takes out dopamine quickly, or gradually. Exam success can be linked to how fast dopamine goes back to an even balance, according to new research from the University of Missouri, reported Yahoo.

What happens when we take an exam? If you become stressed, your brain will start to overload on dopamine. It is like a cup overflowing with water. The quicker you are able to go back to an even balance of dopamine, the quicker you can concentrate, helping you perform better on a test.

Scientists found that, during a test, people who slowly got back to an even balance of dopamine scored 8 percent lower. That’s the difference between a good mark and a bad mark.

But don’t fear, there is good news for every student. The study also found that the more practice you get, the less stress you’ll have.

So, it turns out that practice really does make perfect.

1.Dopamine is a chemical in our body that ______.

A.puts us under a lot of pressure

B.sends signals in the brain

C.keeps our brains working

2.Which things does dopamine play a role in?

① remembering something

②having a good rest

③paying attention to the teachers

④choosing the way we learn

A.①②③ B.①③④ C.②③④

3.What does the underlined word “overload” mean in Chinese?

A.产生 B.超载 C.下载

4.Some students do better under stress because ______.

A.they can go back to a good balance of dopamine quickly

B.they have a lot of dopamine

C.they go back to a balance of dopamine slowly

5.What can’t we learn from story?

A.Our brain either takes out dopamine quickly, or gradually.

B.The quicker you can go back to an even balance of dopamine, the better you can do on a test

C.Practice cannot help you do better under stress

公益组织Helping Makes Perfect在新冠爆发期间，做了很多有意义的事情。假如你是中学生李华，得知其正在招募暑假志愿者，你很感兴趣，请向该组织写一封自荐信，内容包括：

1、想成为志愿者的原因；2、说明优势：特长及爱好，相关经历，合作精神(至少两点)；3、希望得到回复。

注意：

1、80词左右；

2、包含要点，行文连贯；

3、不得使用真实的姓名、校名和地名，书写规范，美观。

Dear Sir/ Madam,

I’m Li Hua, a middle school student. I heard a lot about Helping Makes Perfect during the outbreak of NCP.

_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Yours,

Li Hua

Friends make ________ easier for us to go through difficulties in life. They ________ a shoulder for us to cry on.

A.that; offer B.it; provide C.it; give

美国人几乎无法避免购买中国制造的产品。

Americans can hardly _________ _________ products made in China.

I like to live in a house__________is big and bright, but he lives__________he was born.

A.where, which B.which, that C.where, that D.that, where

— Whose Japanese book is this?

— It __________be Joan’s. She’s the only one who’s studying Japanese.

A.can B.must C.may D.can't

A.He likes oranges. B.He is old. C.He is a teacher.

—What do you think of the fish?

—Oh，it ________(尝起来) good.

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